Design for an Internal Circular Compression Band Restraint Device (Marman Clamp, V-Band)

Abstract

An application requirement is addressed that does not allow a conventional external vband to be used . An internal v-band design was done which satisfies the performance requirements . This report describes that design and the results of the analysis. The desired result of this analysis is to verify that the v-band will not fail under the applied load, the v-band is not self-locking and therefore fail to release when desired, the required expansion force is not greater than a specified limit, and that the natural vibration modes and frequencies do not present any anticipated problems (such as resonance and/or mode coupling) in the application . A successful design is illustrated using the output from a Finite Element Analysis . A sensitivity analysis indicates the importance and interrelationships between several key design parameters, a result that tends to agree with many years of v-band design experience at Sandia National Laboratories.

Modeling and Simulation of Clamp Band Dynamic Envelope in a LV/SC Separation System

“…Reliable payload and component separation devices are fundamental to any space vehicle program. The clamp band system is one of the most popular separation systems in use [1,2]. During the process of separation, the release movement trajectories of the clamp band system are defined as dynamic envelope of the band.…”